C57/100
UNION GAP WATER — Water Quality Report 2026
Serving 6,433 people · Washington
Water Source
Groundwater
County
—
System ID
WA5390250
Violations
23
Contaminant Test Results
EPA Violation History
No violations in the past 5 years
Full EPA compliance since 2017.
Understanding violation severity
Tier 1Urgent health risk. Utility must notify all customers within 24 hours.Tier 2Important health or treatment issue. Customers notified within 30 days.Tier 3Administrative or monitoring issue. Reported in the annual water quality report.
Source: EPA Safe Drinking Water Information System (SDWIS) · Updated quarterly
Frequently Asked Questions About UNION GAP WATER
Is UNION GAP WATER water safe to drink?
UNION GAP WATER water receives a grade of C (57/100), which is considered fair. 0 contaminant(s) exceed EPA legal limits and 23 violation(s) are on record. Customers may want to consider using a water filter.
What contaminants has UNION GAP WATER detected?
31 contaminants were tested in UNION GAP WATER's water. No contaminants exceed EPA legal limits or health goals, indicating good water quality management.
Does UNION GAP WATER have any EPA violations?
Yes, UNION GAP WATER has 23 EPA violation(s) on record, with the most recent in 2017. Violation types include MON, MR, MCL. 5 are health-based violations.
How many people does UNION GAP WATER serve?
UNION GAP WATER serves approximately 6,433 people, Washington.
What type of water does UNION GAP WATER provide?
UNION GAP WATER sources its water from groundwater. Groundwater is pumped from underground aquifers, which often provides natural filtration. The utility's system ID is WA5390250.
How does UNION GAP WATER compare to other utilities in Washington?
UNION GAP WATER scores 57/100 with a grade of C (fair). This score indicates room for improvement compared to other utilities. Visit our Washington state page for a full comparison of water systems.